Manchester United have to beat Zorya Luhansk on Thursday night if they want to avoid a potential Europa League slip-up.
That is according to United boss Jose Mourinho who has labelled the clash with the Ukrainian side at Old Trafford as a must-win if they are to get out of Group A following their opening fixture defeat at Feyenoord a fortnight ago.
"It's very important," said Mourinho.
"If we don't win we have four matches and I would say we have to win all the last four matches, which is difficult."
United will then host Turkish side Fenerbahce on October 20 before the group fixtures reverse.